Japan Disaster Medical Assistance Team (JDMAT) consists of four personnel. They are selected in 47 local governments in Japan, and after the completion of a four day boot camp, they are registered in the list of JDMAT. Hyogo Emergency Medical Center (HEMC) has been playing an important role as one of the oldest boot camps with Disaster Medical Center in Tachikawa. The boot camp's significance is obvious, but the JDMAT system requires a trainer for the course. Many courses were discontinued and affected by the COVID-19 Pandemic.

Retrospective, single institute data, observed in the number of participants for instruction. The periods are from March 2019 to September 2022. Instructing members of this boot camp consist of three categories of Drs, Nurses, and logisticians.

In FY2019, from April to March during the pre-pandemic year, a boot camp was held nine times. During those days, the total number of instructors, including potential ones, was 659 persons, and fortunately 75 people participated for the very first time. However, during the Corona era, in FY2020, the boot camp was held only four times. The total number of instructors was 161 persons, and 14 people participated for the first time. In FY2021, the boot camp was held only three times. The total number of instructors was 141 persons, and 11 people participated for the first time. In FY2022, after two quarters passed, the boot camp was held five times according to the schedule. The total number of instructors was 256 persons, and 18 people participated for the very first time.

Officers were not trained for future disaster response for two years because of the pandemic.